Multiple Domains & one folder - how to manage sitemap.xml?

I have multiple domains example-A.com,example-B.com andexample-C.com that are all different, but they all point to the same folder on my server (The three domains are very closely connected but only administrated through a single Laravel application, for more see Multiple websites with one Laravel installation)

Now I need for each domain a different sitemap.xml file.

I found in this answer how to execute PHP inside XML files. With that I could dynamically change the content of the sitemap.xml with respect to the url. Will this work for crawlers and SE if they try to access the XML file? Or is there a more recommended way of doing this?

via Chebli Mohamed